Ryzen consumer CPUs use the same memory controller as their EPYC counterparts, and have full ECC support if the rest of the platform (i.e., motherboard, DIMMs) also supports ECC.

What separates Ryzen from its professional-grade counterparts is that ECC support is an optional part of the consumer Ryzen platform spec, which means that it's up to the motherboard vendor to enable support for it. Some motherboards don't have any support at all, some have ECC support as an explicitly-advertised feature, and many have ECC support but it's not explicitly advertised (simply listed as a footnote in the manual).

That's different from the way Intel does it, where Intel has explicit control over what the platform's feature are, and uses that control to aggressively segment their markets. Intel's approach makes easier to reason about ECC support as a buyer, but you pay for it with the lack of flexibility compared to AMD's platform (and you literally pay more for ECC).